MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many pointing to compromised websites or disposable domains, suggesting a link farm designed for SEO manipulation or to distribute further malicious content. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://varvshistoriska.com/file/82452887314.pdf
- http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16134c4c1b31fa---ruzukoguzimodi.pdf
- https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/2ehiipru13v2mqs0pqu24ce5r1/22979839766.pdf
- http://aasghsflqsae.handylover.com/upload/files/guzidinifirizar.pdf
- https://hazeloyun.com/calisma2/files/uploads/xaraboduratabiniwanujone.pdf
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/161345577d9a38---7453500442.pdf
- http://eternaseguros.net/files/files/madajulomunapevabu.pdf
- https://associazionemusicaviva.it/uploads/file/bifibozaniwuperedara.pdf
- http://blossomtour.net/FileData/ckfinder/files/20210910_F547C8726463AA17.pdf
- https://dukeofmarshall.com/ckfinder/userfiles/files/tovorogaf.pdf
- https://www.tcf.gov.tr/ckfinder/userfiles/files/28225129508.pdf
- http://zamokugrofa.sk/admin/fckeditor/file/39588251913.pdf
- http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/0t9odbrganf5lmj149756hbgr6srf3d1/35831936658.pdf
- http://luxlustry.ru/img/upload/84674871880.pdf
- http://hvpeds.com/upload/contents/file/wuzifuzabef.pdf
- https://sanipro.ma/app/webroot/uploaderfiles/52640573524.pdf
- http://residenceraffaellotorino.com/userfiles/files/29029063984.pdf
- http://citescolairedeledit.com/include/file/zobigaxadufiwaxud.pdf
- http://majorpropertygroup.com/userfiles/files/viwegimowafixitekapegege.pdf
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1614047055af4f---tuwafufutilif.pdf
- https://invision.buzyhub.com/files/petoronufa.pdf
- http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614174b3caa9c---6363841461.pdf
- https://datenglagi.com/contents/files/fonamefulunoxusokap.pdf
- http://sake-tori.com/images/library/File/xelofotezizar.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=yahoo+weer+app+android
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d8e0.bind17d17fd18548b2ccd93ed4db35d6c7bd69d83be88ea89a8f6920325322b7866 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8E0 | 17404 bytes |
font_01_sfnt_off000105b3.binc70c5e20541276d189ab4a7ab16abc3540b09089a23a6fe0aa0bb350f48fff32 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105B3 | 10244 bytes |
font_02_sfnt_off00011c9f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C9F | 16792 bytes |
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